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Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
05:46

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Strabismus precipitated by monovision.

Zane F Pollard1, Marc F Greenberg1, Mark Bordenca1

  • 1James Hall Eye Center and the Section of Ophthalmology, Children's Healthcare of Atlanta at Scottish Rite Children's Hospital, Atlanta, Georgia.

American Journal of Ophthalmology
|June 15, 2011
PubMed
Summary
This summary is machine-generated.

Monovision can lead to strabismus in some patients, especially those with a history of eye misalignment. Caution is advised when recommending monovision, and limiting the difference in vision (anisometropia) may reduce risks.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Monovision, a method to correct refractive errors by inducing anisometropia, is commonly used.
  • It involves correcting one eye for distance vision and the other for near vision, often via contact lenses, LASIK, or intraocular lenses.
  • While generally successful, its impact on binocular vision, particularly in predisposed individuals, requires careful consideration.

Observation:

  • This study reviewed 12 patients who developed new-onset or recurrent strabismus after adopting monovision.
  • Patients presented with strabismus after monovision was achieved through various methods, including contact lenses, LASIK, and cataract surgery.
  • The onset of strabismus occurred in some cases after approximately two years of monovision use.

Findings:

  • Of the 12 patients, 7 resolved their strabismus by discontinuing monovision.
  • Five patients required surgical intervention to restore motor or sensory function.
  • While surgery achieved excellent alignment in all cases, one patient did not regain full sensory fusion.

Implications:

  • Monovision is generally well-tolerated, but patients with a history of strabismus or significant phorias should be carefully evaluated.
  • Recommending monovision requires caution in these at-risk groups.
  • Minimizing anisometropia to levels around 1.25 to 1.50 diopters may decrease the likelihood of induced strabismus.